Theoretical and Practical Analysis of the Failure of the Chinese Bus Bodies 811327

Based upon the analysis results of static and dynamic tests about the bus bodies, simple and practical calculating methods are suggested by the author for estimating the posts design criteria--the minimum section modulus (Wmin) of side window posts and the minimum moment of inertia (Imin) of the passenger door posts.
After calculating several kinds of buses according to the above-mentioned methods, we can find out that the section modulus and the moment of inertia of most bus body posts all satisfy the ability of the posts to withstand its load.
The phenomena of premature cracking of the bus body posts shows that the action of the torsional rigidity of chassis frames must be taken into account.


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